BI 102.txt

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Anonymous
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151404
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BI 102.txt
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2012-05-01 10:17:58
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bi 102 final
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26-28
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  1. Which of the following processes forms a zygote?
    fertilization
  2. Through which of the following structures in the male reproductive tract do sperm pass last?
    urethra
  3. Which of the following glands is not part of the male reproductive system?
    sebaceous gland
  4. Through which of the following female reproductive structures would an egg (or embryo or fetus) pass last?
    oviduct
  5. Fertilization usually occurs in the ________.
    oviduct.
  6. The human embryonic stage that implants into the uterus is called the ________.
    Blastocyst
  7. A developing human is considered a fetus after the ________ week.
    8th
  8. The umbilical cord contains ________.
    blood vessels and blood of the fetus only.
  9. The costs of sexual reproduction include _____.
    attracting and keeping a mate, producing gametes, nourishing developing young
  10. What organ system is part of the male reproductive system but not part of the female reproductive system?
    Urinary
  11. Which hormone is involved in sperm production?
    Testosterone, luteinizing hormone (LH), follicle-stimulating hormone (FSH)
  12. The endometrium _____.
    lines the uterus, is the site of blastocyst implantation, gives rise to maternal portion of the placenta
  13. Which embryonic membrane anchors the blastocyst and becomes part of the placenta?
    chorion
  14. Blood vessels extend from the fetus, through the _____, and into _____.
    umbilical cord, chorionic villi
  15. The optimal birthing time for a "full term" fetus is _____ weeks after fertilization.
    38
  16. Postnatal growth is most rapid between the ages of _____.
    13 to 19 years
  17. Which of the following choices is not a plant tissue system?
    reproductive tissue system
  18. Which of the following tissues produces a waxy cuticle?
    Epidermis
  19. Which of the following tissues transports water from the roots to the leaves?
    xylem
  20. A plant classified as a eudicot has two ________.
    seed leaves
  21. Which of the following statements describes the arrangement of vascular bundles in a monocot stem?
    They are scattered throughout the ground tissue.
  22. A flat leaf blade with a base that forms a sheath around the stem would typically be found in ________.
    monocots only.
  23. A waxy cuticle is secreted by the leaf ________.
    Epidermis
  24. A mass of undifferentiated cells capable of cell division in the tip of a root or shoot is called a(n)____.
    apical meristem
  25. A main primary root and its lateral branching is a(n) ________ system.
    Taproot
  26. In most areas of the United States, the dark portion of a tree ring forms during the ________.
    late summer
  27. Water movement up a plant is driven mainly by ________.
    water evaporating from leaves.
  28. A stoma in a plant leaf is surrounded by ________.
    two guard cells
  29. The mechanism by which sugar moves in a plant is explained by the ________ theory.
    pressure flow
  30. The complex tissue phloem functions in _____.
    sugar distribution
  31. As a young plant grows taller, most of the cells' divisions are occurring in _____.
    apical meristems
  32. Stomata serve what function in the leaf?
    gas exchange
  33. The root systems of eudicots differ from those of dicots in that_____.
    eudicots have a deep taproot while monocots have a shallower, fibrous root system
  34. Growth rings in trees are caused by _____.
    • large-diameter xylem cells produced during wet springs alternating with smaller-diameter ones
    • made during dry summers
  35. Tropical woods have no growth rings because _____.
    seasonal changes in the tropics are much less pronounced
  36. Mycorrhizae absorb some sugars and nitrogen-rich compounds from plant root cells but they aid the plants by _____.
    aiding in the absorption of mineral ions
  37. The evaporation of water molecules from leaves and stems of plants is called _____.
    Transpiration
  38. _____ conducts mainly water and ions and ____ conducts mainly sugars.
    xylem; phloem
  39. The nutrition of some plants depends on a root-fungus association known as a
    mycorrhizae
  40. Water evaporation from plants is called ____.
    transpiration
  41. Which of the following structures is not part of a carpel?
    stamen
  42. Which of the following descriptions correctly defines pollination?
    arrival of a pollen grain on a stigma
  43. Which of the following structures is not part of a seed?
    ovary wall
  44. Which of the following pollinators is attracted to flowers with pigments that reflect ultraviolet light?
    bees
  45. The portion of the female reproductive organs of the flower, which traps pollen grains so that they can germinate is called the _____.
    Stigma
  46. Flowers with vivid red coloration and no fragrance are likely to be pollinated by _____.
    birds
  47. 3. In flowering plants, the term "double fertilization" means that _____.
    one sperm fertilizes the egg and another fertilizes the double-nucleated cell in the embryo sac
  48. Aggregate fruits form from _____.
    separate ovaries of a single flower
  49. The embryo, its seed coat, and its food reserves are all packaged together into the _____.
    seed
  50. Aspen trees mainly reproduce _____ growing larger through _____.
    asexually, mitosis
  51. Meristematic cells within a plant can differentiate into various cell types because they _____.
    use different subsets of the same set of genes
  52. The _____ ,which bears flowers, roots, stems and leaves, dominates the life cycle of flowering plants.
    Sporophyte
  53. Seeds are mature ____; fruits are mature _______.
    ovules; ovaries, mostly
  54. After meiosis within pollen sacs, haploid _____ form.
    Microspores
  55. Cotyledons develop as part of _____ .
    embryo sporophytes
  56. The _____ of a flower contains one or more ovaries in which eggs develop, fertilization occurs and seeds mature.
    Carpel
  57. Parthenogenesis is known as ___.
    Eggs that develop without fertilization
  58. What determines sex of vertebrates?
    Chromosomes
  59. What determines sex of egg-laying reptiles?
    Temperature
  60. What determines sex of wasps, ants and bees?
    Unfertilized egg = male and fertilized egg = female
  61. What determines sex of bony fishes?
    Their sex can change during their lifetime
  62. Trace the path of sperm in males.
    Testes � epididymis � vas deferens � ejaculatory duct � urethra
  63. What do the seminal vesicles do?
    They secrete fructose (energy for sperm) & prostaglandins � smooth muscle contractions
  64. What does the prostate do?
    It secretions increase sperm motility
  65. What do the bulbourethral glands do?
    They secrete a clear mucus to aid sperm travel and neutralizes urine in urethra
  66. Trace the path of the egg in a female.
    Ovary � oviduct � uterus
  67. What is the pregnancy hormone called?
    HCG
  68. What are the extra embryonic membranes critical to development?
    The amnion and the chorion and the placenta
  69. What does the amnion do?
    It encloses and protects embryo in fluid
  70. What are some characteristics of the kingdom plantae?
    Multi-celled, photoautotrophs, closely related to green algae
  71. What are angiosperms?
    They are the most diverse group with in the plant kingdom, flowering plants, broken into two categories � Eudicots and monocots
  72. What are the three most important plants to humanity?
    Rice, wheat and corn
  73. What are the two basic plant systems?
    Root and shoot
  74. What are some characteristics of root plant system?
    Anchor root, penetrate soil and absorb water + dissolved minerals, store food
  75. What are some characteristics of shoot plant systems?
    Stems & leaves, produce food by photosynthesis, carry out reproduction functions
  76. What do modified stems do?
    Store food and water, vegetative reproductive, protect. EX: white potato
  77. What do modified leaves do?
    Store food and water, climb, attract pollinators, trap insects, collect soil, protect ex: onion leaves and aloe vera
  78. What is Xylem?
    It conducts water & dissolves minerals
  79. What is phloem?
    It transports sugars
  80. What is transpiration?
    It requires no energy, H2O evaporates from leaves (out stomata), low pressure pulls h20 thru xylem, hydrogen bonds hold h2o molecules together
  81. What is pressure flow?
    Requires energy, load sucrose into phloem, h2o passively enters by osmosis, pressure created moves fluid throughout plant
  82. What are monocots?
    Grasses, orchids, palms, lilies, cereal grains, parallel veins in leaves, fibrous root system
  83. What are eudicots?
    Trees, shrubs, roses, oaks, maples, net like veins in leaves, fruit and veggies, has petiole, taproot system
  84. What are the three F�s of flowering plants?
    Flowers, fruits, double fertilization
  85. What are the four parts of an ideal flower?
    Sepals, petals, stamen, carpel
  86. What are seeds?
    Mature ovules
  87. What are fruits?
    Mature ovary and/or nearby tissues
  88. What are four ways of seed dispersal?
    Wind, water, animal hitch hiker, animal edible
  89. What are simple fruits?
    Derived from single ovary, example: peas
  90. What are aggregate fruits?
    Numerous ovaries within 1 flower example: raspberry
  91. What are multiple fruits?
    Many flowers each with own carpel example: pineapple
  92. What are accessory fruits?
    Tissue not derived from ovary example apple
  93. What can trigger germination?
    Rain, fire, cold, light, partial digestion

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